Acetylene-gas generator.



` Patented 0ct 23, |900 A. P. KELLER &. A. M. BEHM.

ACETYLENE GAS GENERATOR.

(Application tiled Feb. 12, 1900.)

No under.)

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No. 660,5I4. V Patented Oct. 23, |900. A. P. KELLER & A. M. BEHM. ACETYLENE GAS GENERATDR.

(Application filed Feb. 12, 1900.)

3 Sheets-Sheet 2.

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Patented 0st. 23, |900 A. P. KELLER & A. M. BEHM.

ACETYLENE GAS GENERATOR` (Application tiled. Feb. 12,f 1900.)

3 sheets-sheet a.

No Model.)

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UNITE@ STATES i PATENT OFFICE'.

ANTHONY P. KELLER AND ALBERT M. BEHM, OF TIFFIN, OHIO.

ACETYLENEGAS GEN ERA-ron.

SPECIFICATION forming par't of Letters Patent No. 6605514, dated October 23, 1900.

`Application filed February 12. 1900. Seria1`No.43956. LNG model.) v

To ctZZ whom it may concern:

Be it known that we, ANTHONY?. KELLER and ALBERT M. BEHM, citizens of the United States, residing at Titin, in the county of Seneca and State of Ohio, liaveinvented certain new and useful Im provemeni-s in Acety` lene-GasGenerating Machines, of which the following is a specification.

In the statement of our invention in acetyited to the precise form and construction of the several operating parts herein illustrated and described.

In our machine for generating gas from calcium carbid there are features and devices involving novelty of construction, of combination for automatically regulating and supplying water to a pair of gas-generators, for cooling` the gas in its iow to the gasholder or float, for automatically Ventilating the generators by opening communication therewith to the outer air when they becolneexhausted of the gas-produ cing properties of the calcium carbid and before being recharged, and for automatically diverting the gas from the gas-holder into an air or waste pipe as a means of safety against undue pressure and volume of gas in the holder; and the invention embodies provision whereby through connections with the float or gas-holder its movements are caused to regulate and control a valve for supplying the water to the generators, a valve for diverting the flow of the gas from the gas-holder to a waste-pipe, and valves whereby the exhausted generators are ventilated during the operation of the machine, these several operations of the valves being effected at the proper times to renderthe working of the machine continuous with the highest degree of efficiency and safety.

Referring to the drawings, Figure l represents in side view a gas-generating machine embodying our invention, wherein is seen in vertical section a gas-generating tank and a y gas-purifying tank, from which the gas is delivered into the float or holder. Fig. 2 is a front view of the machine, the gas-generators being removed, showing their connecting outdow-pipes q q in section, by which the gas is delivered from the generators into the cooling-tank F, shown by dotted lines within the water-cylinder in Fig. l. Fig. 3 is aside view, enlarged, of the'safety-valve p, the rod h2, by which the valve is automatically opened by the raising of the float, and the Weighted arm q for closing the valve, as it is seen in Figs. l and 2, the opening of this safety-valve only occurring when the Hoat has reached its maximum height, whereby to prevent the further inflow of gas intothe iioat and thecntting off` of the water-supply. Fig. 4 shows the same Fig. 5, Sheet 2, shows, enlarged, in side View the ventilator-pipe, its controlling plug-valve seen in Figs. l and 2. Fig. 6 shows in front view the Ventilating-valves t t, the pipes controlled thereby, and the actuating connec-V tions for said valves, the pipes q q, connecting the generators, being shown in section. Fig. 7 shows in top View the Ventilating-valve t" and its operating armed connection. Fig. 8 shows in side and end views the arm ed shaft b and its pins by which the ventilal ing-valve is actuated. Fig. 9 shows in vertical section the lower part of thevwater-cylinder and in side elevation therein the gas-cooler. Fig. 10 shows the gas-cooler in top View, and Fig. ll shows the gas-cooler in vertical section and its connected gas-purifier in side View. Fig.

valve in top view and its actuating parts.

t", and the connections for actuating it, as f l2, Sheet 3, shows, enlarged, the water-snp ply pipes, the water-transfer spout, and the connections by which the valvefis actuated for controlling the supply of water to the generators, as seen in Fig. 2. Fig. 13 shows the same parts taken at right` angles to Fig. 12. Fig. 14 shows in top, side, and end views the water-transfer spout; and Fig. l5 shows the rock-shaft and its pins, in side and end views, by which the water-transfer spout is tilted to change the dow of water. Fig. 16 showsin horizontal section on the line 4 4 of Fig. l the water-cylinder, the gas-generators, the gas-cooler, and the gas-purifier and their connections. Fig. 17 is a detail showing the safety-valve and the pipes connecting it with the puri tier and the ventilatingfpipe; and Fig.

18 shows the complete machine in perspective, with the two gas-generators and their connections.

The front of the machine will be considered that side at which the gas-generators are set.

The gasometer consists of the fixed opentop cylinder D, which is maintained filled with water to the dotted line 20, Fig. 1, and the gas-holder D, floated and sealed therein to retain the gas therein and which has a rising-and-faliing movement, according to the pressure of the gas between the top of the float and the surface of the water, in the usual manner for supplying the burners, by'a diving-pipe 21, opening into the chamber of the oat, passing through the water therein, and out at the bottom, at fu, to the burners, as seen in dotted lines in Fig. 1 and in full lines in Figs. 9 and 16.

Two generators A A/ are provided for separate and alternate use, each having a separate and independent carbid-holding bucket or vessel B, supplied with water by separate and independent pipes E E', each rising vertically at the sides of the generators and some distance above and entering the generator by awater-seal trap connection. (Seen in Figs. 1 and 18.) Each generator has alid c,which is clamped in place by a pivoted yoke d and a clamp-screw e. The bucket for containing the calcium carbid is of less size than and sits within the generator and has a fixed central perforated pipe b, having a funnel a at its top and a circular plate b' at its bottom of less diameter than the bucket and raised a little from the bottom. Each water-supplying pipe is bent to form a loop-trap, which opens into the funnel and when filled with water prevents the escape of the gas from the generator through the open watersupply pipe, but allows the free fiow of the water into the generator. The central perforated pipe b allows the water to pass through its walls and which also passes under its bottom plate b' into the calcium carbid, and the gas generated thereby fills the tank A and passes therefrom through the downtake-pipe q and pipes g3 s into a cooler F, submerged in the water-cylinder. Preferably this cooler, as shown, is a narrow oblong tank, having a height about half that of the water-sealing cylinder, and is divided by a vertical partition s2, Figs. ll and 16, into two compartments communicating at the top, whereby the gas entering at the bottom by the perforated pipe s is caused to pass upward and downward over the partition s2 in contact with the long side walls, which thereby radiate all undue heat from the gas before it enters the purifier G. rlhe purifier consists of a tank filled with cotton. (Not shown.) The gas leaving the cooler at its bottom by the pipe :1:3 enters the bottom of the purifier and leaves it at the top by the pipe t, which, entering the wall at the bottom of the water-cylinder, extends upward by the branch t and opens into the gasholder above the level 20 of the water, as

seen in dotted lines in Fig. 1. The gas entering the cooler is separated and distributed therein in streams by a perforated pipe s', which forms an extension of the pipe s, thus giving the fullest heat-radiating effect to the gas. The arrangement of the cooler within the water-sealing cylinder and its connection with a purifier external to said cylinder gives the important advantage of cooling the gas before it passes int-o the purifier for cleaning and drying it before it passes into the holder or float from which the burners are supplied. This arrangement also gives the advantage of a simple construction of cooling-tank seated upon the bottom of the water-cylinder, so as to be entirely submerged, and the ad vantage of the gas first passing through the sub merged tank and again through this body of water by the uptake-pipe t after it has passed through the external purifier, thereby subjecting the gas to two distinct cooling actions before it enters the supply-chamber of the float, in its passage from which it is again cooled .in the downtake-pipe 21,which passes through the body of the water to the bottom of the water-cylinder and thence to the burners by the pipe o, Fig. 1. These three cooling ows o f the gas being within the watercylinder are thus provided by radiating wails andgives compactness to the means which renders effective the cool condition of the gas in the supply-float, which conduces to safety in the accumulation under pressure of dry gas free from foreign material.

The water-supplying pipes terminate in open fuunels side by side, and above them is the water-supplying tank C, mounted by a suitable bracket on the upper end of the gasholding fioat. Depending from this tank is a tube c2, upon which is pivotally mounted a tray or double-ended chute z', adapted to receive and automatically transfer the water alternately from one pipe E to the other in the operation of supplying the water to the generators. This tray or chute is doubleended, and its mounting-pivot Z, Fig. 13, is mediately of its length, so that it is free to be tilted to deliver the water alternately into the supply-pipes of the generators. A transverse rod Z, mediately xed to the chute, forms its pivot and has its bearings in lugs depending from a bracket h, fixed to the lower end of the tank-tube. The rocking of this pivot-forming rod tilts the chute to bring its delivering end directly over the generator supply-pipes, as seen in Figs. 2 and 12, so as to deliver the water alternately into these pipes. This water supply is effected and controlled by the rising and falling of the float or gas-holder by means which I will now describe.

A plug-valvef in the tank-tube has a rod g fixed thereto, which extends to and has a free sliding joint connection h3 with the float, S0 that the rising and falling thereof will cause the arm g to open and close the valve fto control the supply of water. The valve- IIO one end of this rock-shaft are fixed .diamet-.

'rically-projectiiigarms o o oi equal length, which terminate in reverse curves, Figs. 15 and 13, which, with the crank cain-arm p, form coactiug cam parts, the action of which ef- .fects the rocking of the'shaf t rn/,which in turn effects the rocking oi' the pivot-rod Z tu tilt the chute. The rock-shaft fm has diainetrically-projecting pins n n', and the pivotrod Z has diametrically-projecting pins Z Z', Fig. 111, andthe relation of these separate sets of pins is such thativhen-the iioa't lowers' the crank cam-arm' piet-ihfloat"connecting-rod ,f/ comes in contact with the cam-arms o o on the rock-shaft in and causes thereby said shaft to make one-half of a revolution, bringing one of its pins ri, or n' in contact with the pins l or L on the pivot-rod Z, thereby causing it to rock andthe chute. to tilt'from one side to the other, thereby changing the iiowy oi' water from the generator which has become exhausted into the other generator. l

It will be understood that it is the decrease of the gas-pressure in the float that causes it to lower and that this decrease of gas-pressure is caused by the exhausting of the gas-producing element of the calcium carbid.

For holding the chute in its tilted position a plate-epring 7, Figs. l2 and 13, fastened to the bracket h, ei'igages a Heat-recess 8 in the rock-shaft m, Fig. 15, the tension of the spring yielding readily to allow the turning of the chute by the camI actions, as stated, to change the iiow oli' waters 'Phat it may 'les seen at a glance which oi' the gas-generators are exhausted van indicating-arm 7c is fixed on the chute-pivot l and stands downpointing to the empty generator, as in Fig. 2, thus git/'ing notice that it should be renewed. For this purpcsethe indicatingarm 7c is 'lixed to the chiite-pivot at right an'- gles to the line of the chute, so that the tilting of the latter carries the indicator from one side o the stand-pipes E E to the other. This indicating-arm extends above the chute and has a weight j, to hold the chute in its tilted position, and 'For this purpose, referring to Figs. 2 and 12, the ends of the chute are seen as oblique, so that when tilted they will abut against the under side oi' the bracket, which will form a stop, and thus the weighted arm will hold the chute against the stop whichever way the chute is tilted. i'be weight, however, is not sui'iicient to interfere with the free tilting' oi the chute by the means described.

Preferably the'ionnection ofthe Wai'er-controlling vaivearin r/ with the Iioat is con nected to the rolly 721i at the top of theloat, as

the purpose oi which isV in Figs. 1, 2, and 18, and extends down to near the bottom of the water-containing cylinder. This connection of the Valve-arm is such that when the float contains little or no gas-pressure itis atits lowest position and the valve f Will be open and allow a full flow of water luto the generating-pot into which the Waiter-.dilute is delivering...

Referring to Figs. 6 and 16, it will be seen that. the gas-supply pipe q from each generator connects with the single pipe s, leading into the cooler, and therefore the gas as lgenerated passes through the pipe q from elther generator directly into the cooler by the pipe s.

To isolate the exhausted generator, its outflow-pipe q is provided with a cut-off valve 2,

Check-valves r r are also Figs. 1, 16,31nd 18. I provided Iin the pipes q q, which while allowing the gas to open them topass freely fromthe generators to the ceolenareto-preventtiie gas by backp-ressiI-re passing from the iioat into the exhausted generator when the cntoff valve 2 is not closed, or from any other cause,such as to open the pipe q io the air,pre vent the hacktl'ow oi the gasfroin the 'doat check-valves for this purpose being well understood.

Provision is made by a safety-valve p for allowing the gas to escape from 111e gas-holder in the event of/any accident which would cause the generation of more gas than the holder couldl contain with safety. 'llhis provision is an automatic safety-valve p', vfitted in 4a pipe 9, Figs. 1, 17, and 18, rising as a branch ci' the pipe t, leading fromthe top of the purifier into the water-cylinder and open ing into the ventilator-pipe m', as in Fig. 17.' A Weighted arm q', Figs. l and 1.H,conuects and extends from the stein of the valve p' and basa crank end l0, Figs. 3 and el, which engages the side ofthe pipe to hold the weighted arm horizontal, With the valve closed.

'lhis valve i's opened automatically by means of a pin s', projecting from the lower end oil the float depending rod h2 and in such relation to the said weighted arm that when the float is approaching its highest point by reson of the volume and pressure oi the gaf therein this rod-pin s' will be brought into en* gagement with and ,lifting thereby theweight* ed arm q', open the safety-valve, and Ihereby cause the gas passing from the puriiier To he diverted from the float into the ventilatorpipe 'in' and relieve the undue pressure in the lioat. For this purpose the Ventilatingpipe is convenienuand its use for the two purposes is a feature of our improvement;

but the safety-valve may be on a separate waste-pipe.

Provision is made for automatically ventilaiing the generating-tanks as soon as they become exhausted, thereby clearing them ol gas and fumes before recharging them. 'lhe means whereby this ventilation is effected consists ot branch pipes m2, Figs. 2 and '6, rising from the pipes q q between the gen- IIO from the pipes q up through the branch lpipes "mia thereon, the check-valve r in the pipe of the exhausted generator being closed by the Aback pressure of the gas from the gas-holder. The opening of the pipe q to the outer air for this purpose is rendered automatic by a plug-valve t' 'i' in each branch pipe 'm2, which are operated by the following means: A horizontal shaft b is mounted in bracketsc' c', fixed on the branch pipes mi, and "has oppositely-projecting pins g' g', Fig. S, one for use with and near each valve, while at its end this shaft ZJ has two oppositely-projecting pins ct' ct', whereby the shaft is caused to be rotated,as will be presently stated. Connected with the stem of each valve if is a Weighted arm no', each having a crank end part 7L', Figs. (i and 7, bent to form' a sort of cam in its coacting function with the arms g' of the shaft b. One of these arms stands horizontal and the other stands vertical, and each in its normal position keeps itscon- -nected valve closed, as in Figs. 2 and 6. The rotation of the shaft b' causes its arms g' g to engage the crank ends 7i. of `the weighted arms m in a wayto rotate the valves 'i' to open them, and this operation is effected as follows:

The depending rod h2, besides serving as thev means to open `and close the water-,sup-

plying valve j", serves as the means of connecting and. actuating a lever y, Figs. 1 and 2, pivoted to an arm fixed on the vertical branch of the Ventilating-pipe fm' and havinga depending arm Figs. 1 and 5, terminating in a crank and having such relation to the pins ct' ct', Fig. 8, as to engage them'in a way to give a half-revolution tc the shaft b. The sliding jointed connection of the lever- .arrn y with the depending rodh is such as 'to allow the lever-arm 'y to rise and fall with Said depending arm and to have a slight gliding movement in said jointed connection.

When one of the shaft-arms g` is engaged" with the valve lever-arm h' to open the valve, the other arm g is out of action, and when une of theshaft-pins ct' is acting .on the lever.-4 ar'm a: the other shaft-pin a. is out of action. lhooking, therefore, at Figs. 1 and 2, it will be seen that when the gas-holder and its depend-I ing rod h2 are lowered by the use of the zgas the lever y will be carried down, bringingits depending arm ai in contact with one of the shaft cani-pins a', giving a half-rotation to the shaft, which will bring one of the shaftpins g into engagement with the crank end of theweighted arm w' of one of the valves t", causl'ngthevalyewtgmbe,opened for the escape of the fumes from'tlie'ehausted generator. The exhaustion of the generator will cause the gas-holder to lower. to such an extent that the depending cam-arm p of the arm cape from the second generator.

g will be brought into contact with one of the cam-pins o of the shaft fm, causing it toinake one-half of arevolntion, bringing one of its projecting pins fn. or 'n' into contact with one of the pin projections Z of the chute-shaft, and thereby cause the chute to be thrown to the opposite side, thus changing the flow of water to the other generator, and the genera tion of the gas will thus be repeated. The changing of the position of the chute will at the same time throw the weighted indicator over so that it points to the empty genera'- tor and holdsthe chute in its changed position. While the'abcve operation is taking place the lever 'y' is also caused to lower by the lowering of the gas-holder, thus bringing its depending cam-arm into contact with one of the shaft cam-pins d', causing the shaft to make one halfrevolution, its pins g' into contact with the crank-arm h of the Ventilating-valve, throwing it down, so that its weighted arm will rest upon the bracket l-I, thus opening the valve and allowing the gas and fumes to pass out from the exhausted generator. This Ventilating-valve remains open until the generator is recharged, when the valve is closed by the operator rais.- ing the weighted arm or' to a vertical position, as in Figs. 2 and 6, in which one of the valveweightedarms is shown in its thrown-down position. In this way the operation is repeated, and when the other generator is in like manner exhausted the ventilator-shaft will be turned another half-revolution, and thereby cause the second Ventilating-valve to be opened to allow the gas and fumes to es- It is important that while the iioat depending rod h2 has thefu-nctions of controlling the water-supply valve j' and the Ventilating- `valves i '11' it alsohas the function of opening the safety-valve p', and this is effected by a pin s' onthe lower end of said rod (when the vlatter is carried up with the gas-holder to such a height as undue pressure in the gasholder would cause) being brought in 'contact with the weighted arm q and lifting it,

thereby opening the safety-valve1o' and allowing the gas to pass direct from the generators yinto the Ventilating-pipe m. This pipe, therefore, while being made to have automatic.v Ncommunication with Athegenerators to carry away the gas and fumes remaining in them after their exhaustion of the gas-producing .properties of the calcium carbid is also made tohave automatic communication with the ,generators as a means of diverting the gas as it is being generated from the gas-holder and directing it into an escape-pipe.

In Figs. 1 and 16 are shown hand-valves 2 2 on the pipes q' Q, for closing the communication ofthe pipes with the gas-generators when recharging them, while in Figs. 1, 17, and 18 -is seen a valve 3 in the `outiiow purifier-pipe for cutting off communication..between-it" and thegas-hiclde'r when renewing the cotton illing'of the purifier.

bringing one of l IIO In the operation of the machine the gas passes lrom the generator through the pipeq l into the pipe s, thence into the perforated i pipe s of the cooler, and thenceinto the purifier by the pipe mfrom the top of which the gas passes by the downtakepipe t into the branch V pipe if in the Water-cylinder and opens by this uptake t into the gas-holding chamber. this iiow of the gas the valves 2 2 are open, the check-valvesin' their normal closed position,

and the valve 3 open and the safety-valve closed. The water-cylinder is filled at 5, and 6 is the draw-ott valve, and the generators may be provided with the usual waste-valves. TheY provision for automatically cutting off the fiow of water to the generators being self-acting, under no circumstances can the water purifying it through cotton takes from it all;

smell, and therefore the lights can be turned down very low without giving olif obnoxious fumes.

We claimi l. In a gas-generator of the characterfdescribed and in combination with a watercylin der, a gas-holding float sealed therein, a gasgenerator and a gas-purifier both `external to the Water-cylinder, a gas-cooling tank within the latter, and a Water-reservoir, with a water-sealed supply-pipe connecting the generator, a gas-pipe connecting the latter with the bottom of the cooling-tank, a perforated pipe s in the latter forming a continuation of said gas-pipe, the pipe w3 connecting the bottom of the cooling-tank with the bottom of the purifying-tan k, the pipe x4 connecting the top of the latter with a diving pipe t entering the bottom of the watercylinder and rising therein by a branch pipe if' opening into the gas-holding iioat, the gas downtake-pipe 2l and means for supplying water to the generator, substantially as described.

2. In a gas-generator, and in combination with a Water-cylinder, a gas-holding float sealed therein, a pair of gas-generators, and means for connecting them with'the gas-holding float, a pair of downtake-pipes side by side, open at their upper ends, each entering the gas-generator by a water seal, a Waterreservoir having a depending nozzle, a lever g connecting said plug-valve and ioat and having a depending cam-arm, p, a bracket on the discharge end of the nozzle, a doubleended chute pivoted to said bracket and having oppositely-projecting pins l Z', a shaft m on Said bracket at right angles to the traypivot adjacent to its pins, and having pins n, n adapted to engage the pivot-pins, and camarms o o adapted to be engaged by said camarm p, whereby the rising-and-falling movements of the iioat are caused to control the water-supply valve and to tilt the chute to deliver into one or the oherof the dowrltakepipes, in the way and [or the purpose stated.

3. In a machine for generating acetylene gas, and in combination with a water-cylin-` der, a gas-holding float sealed therein,` and a generator external to the water-tank, a pipe i q connecting the generator and the gas-holding float, and having a check-valve r between the tank and the generator, an uptakepipe m2 connecting the pipe q between the generator and the check-valve, and open to the air, a plug-valve i," in said pipe `m2, a lever yconnecting said valve and having a depending ing from the gas-holdin g float, and connected `tosaid lever y'and means adapted to be engaged by the depending can1-arm` :n and to engage the said valve, whereby when the gasi cam-arm :11, a rod h2 connected to and dependproducing substance is exhausted, the descent 4. In a gas-generator and in combination with ajwater-cylinder, a gas-holding float sealed therein, and a gas-generator external to the Water-cylinder, a pipe q connecting the generator and the gas-holding loat,of a checkvalveito cut off said communication, by the back pressure from the gas-holder, and a pipe fm2 located in said pipe q, between the said check-valve and the generator, and open to' `the air, a valve controllingsaid open-air pipe, i

and means connecting said valve with the gas-holding fioat, whereby to open the generator, for ventilation to the outer air.

5. In a gas-generator and in combination a water-cylinder, a gas-holding (ioat sealed therein and a gas-generator external to the cylinder, a pipe q connecting the generator and the gas-holding oat, a gas-cooling tank within the water-cylinder, a gas-purifying tank external to the latter, and a pipe t connecting thepurifying-tank with the watercylinder, and gas-holding float, with a pipe 9 connecting the pipe t between the puriiier and the water-cylinder, and opento the air, a valve p' in said pipe 9 and means connect- `ing said valve with the gas-holding iioat,

whereby when the float has reached its maximum height the said valve will be caused to be opened to divert the gas from the gas-holding iioat, into the open-air pipe to relieve the pressure in the gas-holder.

6. In a gas-generator, and in combination a water-cylinder, a gas-holder sealed therein and a gas-generator external to the cylinder, a gas-supply pipe connecting the generator the purifier and the gas-holder, and a pipe 9 external to the water-cylinder connected with the pipe which connects the generator and the purifier and open to the air, asafety-valve p on the open-air pipe, a Weighted arm on said valve normally closing it, and the rod h2 connected to the ioatand having a pin s' roo IIO

adapted to engage the Valve-arm whereby when the gas-holder is at its maximum height the valve is caused to be opened to divert the gas from the gas-holder into'the open-.air pipe in the way and t'or the purpose stated.

7. In a gas-generator, and in combination a water-cylinder, a gas-holder sealed therein and a gas-generator external to theeylinder, a gas-supply pipe connecting the generator and the gas-l1older,a pipe m2 between the generatorand the cylinder open to the air and Connected with the gas-supply pipe, a pipe 9 connecting the open-air pipe external to the cylinder and between it and the pipe m2, a

plug-Valve 1" on lthe lat-ter pipe and means con neet ing it with the gas-holder whereby the valve is opened on the maximum descent of said gas-holder, a plug-valve p on the pipe 9 and means whereby said Valve is opened on the maximum height of the gas-holder substantially as and for the purpose speoil'ied.

S. In a g'asgenerator, and in combination a water-ey1inder, a gas-bolder sealed therein and a gas-generator external to the cylinder, a water-reservoir and a pipe delivering water therefrom tothe generator, a gas-supply pipe connecting the generator and the gas-holder, a pipe m2 open to the air arranged to Communicate with the gas-pipe for Ventilating the generator, a pipe 9 connecting the gas-pipe and the open-air pipe for diverting the gas from the gas-bolder, a plug-valve controlling the water-supply, a'plugwalve in the Ventilating-pipe, a plug-valve in the gas-diverting pipe, and means including suitable eonneevtions whereby the said several Valves are operated by the raising and lowering of the gasholder in the way and for the purpose stated.

9. In a gas-generator, and in combinationl a water-cylinder, a gas-holder sealed therein and a gas-generator external to the cylinder, a water-reservoir and a pipe delivering water therefrom to the generator, a gassupply pipe eonneeting the generator and the gas-holder, aipipe open to the air arranged to communi- Cate with the gas-pipe for Ventilating the generator, a pipe connecting the gas-pipe and the open-air pipe for diverting the gas from the gas-bolder7 a plug-Valve controlling the water-supply, aplugvalve in the Ventilatingpipe, a plug-Valve in the gas-diverting pipe, a rod conneetingtoand depending from the gasholder and means including suitable connections whereby the said several valves are operated by the risingand-falling movements of the depending rod of thegas-holder in the wayvand for the purpose stated.

l0. In a gas-generator of the Character described, and in combination a water-generator, agasholder sealed therein and a. gas-generator external to the cylinder, a water-reservoir and a pipe delivering water therefrom to the generator, a gas-supply pipe eonneoting the generator and the holder, a cheekvalve in said pipe, a pipe open to the air arranged to .Communicate with the gas-pipe between the check-valve and the generator for Ventilating the latter, a eut-ofi' valve in the gas-pipe between the generator and the Ventilating-pipe,- a valve in the ventilator-pipe, and means including connections with the gas-holder whereby the ventilation is eteeted and controlled by its movements.

ANTHONY P. KELLER. ALBERT M. BEHM. Witnesses: v

CHAs. HERMANN, Jr., B. W. CROBAUGH. 

